For many years, William Graham was a familiar and well-respected face in his local community. As manager of the sub-post office located within a pharmacy in Riverhead, near Sevenoaks, his reputation was important to him. “I enjoyed working with the local people,” he explained, “talking to customers and generally building the business up.” In fact, he was a similar pillar of the community as that portrayed by Toby Jones in ITV’s Mr Bates vs The Post Office – an acclaimed dramatisation of a scandal so shocking it has been proclaimed one of the nation’s greatest miscarriages of justice. But back …